Automatic closing attachment for window-sashes.



G. SGHWINGr AUTOMATIC CLOSING ATTACHMENT FOR WINDOW SASHES.

' APPLICATION FILED r1112. 5, 1903.

901,390. Patented Oct. 20, 1908.

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ATTORNEY GEORGE SOHWING, OF NEWARK, NEW JERSEY.

AUTOMATIC CLOSING ATTAGHIMENT FOR WINDOW-SASHZES.

Specification of Letters Patent.

Patented Oct. 20, 1908.

Y Application filed February 5, 1908. Serial No. 414,314.

To all whom it may concern:

Be it known that I, GEORGE SCHWING, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Automatic Closing Attachments for Window-Sashes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompany ing drawings, and to figures of reference marked thereon, which form a part of this specification.

This invention relates to a selfclosing window, and is designed to provide a means for releasing a weight which is normally sus pended by a fusible link or support, this release being occasioned by the melting of the link, and when thus released the weight acts on the sash-weights to cause the windows to shut.

The invention is preferably made up of a secondary weight suspended over the sashweight of the upper sash, and when the secondary weight descends, after its release, it rests on the sash-weight of the upper sash and forces it down. The secondary weight also has flexible or similar connections with the sash-weight of the lower sash, so that if the lower sash is up its weight is lightened and the sash descends. The single weight can in this way be used for closing both sashes.

The invention is illustrated in the accompanying drawing, in which Figure 1 is a front View of a windowframe and upper and lower sashes therein, partly broken away on one side to show the weights. Fig. 2 is a perspective view of the weights and the connections between them and the sashes.

The window-frame 10 which is illustrated herewith is of the metal type and has the sliding upper sash 11 and the lower sash 12. A chain 13 and a weight 14 act to normally counterbalance the upper sash 11, and a chain 15 and a weight 16 serve the same purpose for the lower sash 12. These chains are the usual fixtures and run over the pulleys 17. A secondary weight 18 is suspended in the window-frame and in the channel in which the sash-weight 14 of the upper sash runs. The secondary weight 18 is held against dropping by a fusible link, and the preferred form of installing it is to secure the weight 18 to a chain 19 which passes over a pulley 20, and has its end fastened to a fusible link or strip 21 which can have one end fastened to the sash frame, but which is preferably secured to a similar chain 19 which suspends a duplicate secondaryweight in the channel on the other side of the window-frame.

The secondary weight is provided with a central perforation 22 through which the chain 13 normally slides, and which allows the secondary weight 18 to drop down on the weight 14 of the upper sash when the link 21 is severed. The fusing of the link 21 causes the secondary weight 18 to add its weight to that of the sash-weight 14, if the weight 14 is up and the sash is down, and this extra weighton the sash weight, especially when applied on both sides of the window-frame, will instantly cause the upper sash to rise to its place and be shut. A transverse pulley 23 is placed between the channels for the sash-weights, which channels are formed by a partition 24. A chain 25 connects the secondary weight 18 with the weight 16 of the lower sash, and if the lower sash is up and its weight is down, whenever the auxiliary weight is released, the descent of the weight 18 will counteract the weight 16 sufficiently to permit the lower sash 12 to drop shut by gravity. The cooperation between the parts is simple and positive, and a window is provided in which the closing of both sashes is assured if a heat sufficient to fuse the fusible link is applied thereto.

Having thus described my invention, what I claim is 1. The combination of a window-frame, an upper sliding sash and a lower sliding sash, sash chains and weights on opposite sides of the sashes, with an auxiliary weight suspended on each side of the window-frame over the sash-weight of the upper sash, a flexible connection holding the auxiliary weights, a fusible link in the flexible connection, a transverse pulley on each side of the window-frame, and a flexible connection be tween each auxiliary weight and the sashweight of the lower sash.

2. The combination of a window-frame, an upper sliding sash and its weight, a lower sliding sash and its weight, with an auxiliary weight, a fusible link for suspending the auxiliary weight from the window-frame,

the auxiliary Weight when released adding its weight to the sash weight of the upper sash, and a flexible connection between the auxiliary weight and the sash weight of the lower sash, the flexible connection between the auxiliary weight and the sash weight of the lower sash being slack except when the auxiliary sash Or the weight of the lower sash are at their opposite limits of move 10 ment.

15 iliary weight, the auxiliary weight when released adding its weight to the sash weight of the upper sash, a transverse pulley between the weights of the upper and lower sashes, and a flexible connection passing over GEORGE SCI-IWING.

Witnesses:

M. H. GAMFIELD, E. A. PELL. 

